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Magnetic resonance device with a high frequency shield having a high frequency short circuit to the circuits boundary surface of the basic field magnet
Magnetic resonance device with a high frequency shield having a high frequency short circuit to the circuits boundary surface of the basic field magnet
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机译:具有高频屏蔽罩的磁共振装置,该高频屏蔽罩对基本场磁体的电路边界面具有高频短路
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摘要
A magnetic resonance device with a cavity and with a basic field magnet and a gradient coil system, with the basic field magnet having a cavity that is bounded by an electrically conductive boundary surface of the basic field magnet and in which the gradient coil system is arranged, containing the following features:the gradient coil system has at least two structurally separate units with a clearance between them, with each of the units being enclosed by the high-frequency shield;the high-frequency shield has a short clearance from the boundary surface such that, because of the capacitive coupling between the high-frequency shield and the boundary surface, the high-frequency shield has a high-frequency short circuit to the boundary surface, so that the boundary surface is a surface that is always available for the high-frequency return flow.展开▼